Pacific Scavenger Hunt Further Investigations: The colors disappear underwater in the same order as they appear in the color spectrum. Phylum Echinodermata Phylum Chordata Activity: If this information is right, what could be the possible explanation? Amphibians in Decline Activity: Nitrogen are cooled by passing their heat kinetically to the water. Light passing through water also becomes polarized, which means its wave motion vibrates in only one direction, or plane.